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Did you know that if a spammer uses your email address as the FROM: address, which is easy to do, all the bounce messages will go to your email address? If the spammer really hates you, they will send (hear-me.social)

submitted 2 days ago by Jerry@hear-me.social to c/cybersecurity@fedia.io

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Can you stop this or prevent this? No

Why would a mail provider send you a bounce message, knowing you're innocent? Because that's how someone wrote the protocol back then, and nobody changes it or does it differently because ... reasons.

Does the spammer get a bounce message? Nope, not one.

Does the SMTP sending account owner whose credentials were stolen be notified about bounces so they can stop the spam? Nope.

Just millions of emails sent every day to poor schlameels who have no idea why they are getting them and who can't do anything about them.

The more I learn about the email protocols, the more I realize how terrible the design is.

#emailsecurity #spoofing #cybersecurity #spam

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[–] lautreg@pouet.chapril.org 2 points 1 day ago

@Jerry@hear-me.social
Oh yes.
I can't check, but I think there is setting to refuse connexion with the sender server if SPF doesn't mach.
Like the policy in the DMARC?

Or, in spamd/spamassassin, to just drop the incoming email in these case?

(I'm on phone, I may write more wrongly than usual)